You can create a helix or spiral curve in a part.
		- In a part, do one of the following:
			- Open a sketch and sketch a circle.
- Select a sketch that contains a circle.
 The diameter of the circle controls the starting diameter of the helix or spiral. 
- 
Click Helix and Spiral 
 (Curves toolbar) or . (Curves toolbar) or .
- Set values in the Helix/Spiral PropertyManager.
- Click  . .